US4128716AExpiredUtilityPatentIndex 63
4-Halo derivatives of pyrazolo[1,5-a]-quinoxaline-3-carboxylic acids and esters
Est. expiryMar 22, 1996(expired)· nominal 20-yr term from priority
Inventors:TREUNER UWE D
C07D 487/04C07D 231/14
63
PatentIndex Score
4
Cited by
3
References
7
Claims
Abstract
New 4-halo derivatives of pyrazolo[1,5-a]quinoxaline-3-carboxylic acid, esters and their salts have the formula ##STR1## R 1 is hydrogen, lower alkyl or a salt forming ion; R 2 is hydrogen, lower alkyl, halogen or lower alkoxy; and X is halogen. The new compounds are useful as intermediates and as anti-inflammatory agents.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1. A compound of the formula ##STR36## wherein R 1 is hydrogen, lower alkyl, alkali metal or alkaline earth metal; R 2 is hydrogen, lower alkyl, halogen or lower alkoxy; and X is halogen.
2. A compound as in claim 1 wherein R 1 is lower alkyl; R 2 is hydrogen or lower alkyl; and X is chlorine or bromine.
3. A compound as in claim 1 wherein R 1 is ethyl; R 2 is hydrogen, methyl or ethyl; and X is chlorine.
4. A compound as in claim 1 wherein X is chlorine.
5. A compound as in claim 1 wherein R 2 is hydrogen.
6. A compound as in claim 1 wherein R 2 is hydrogen and X is chlorine.
7. A compound as in claim 1 wherein R 1 is ethyl, R 2 is hydrogen and X is chlorine.Cited by (0)
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